15908

Megavoltage planning—level 2.2 Three‑dimensional radiation therapy simulation and dosimetry for treatment planning with motion management, if: (a) all of the following apply in relation to the simulation: (i) treatment set‑up and technique specifications are in preparation for complex three‑dimensional planning with consideration of motion management; (ii) patient set‑up and immobilisation techniques are reproducible for treatment; (iii) a high‑quality three‑dimensional or four‑dimensional image volume dataset is acquired in treatment position for the relevant region of interest to be planned and treated with image verification; and (b) all of the following apply in relation to the dosimetry: (i) the three‑dimensional planning process is required to calculate dose to three‑dimensional volume structures (which must include structures moving with physiologic processes) and requires a dose‑volume histogram to complete the planning process; (ii) based on review and assessment by a radiation oncologist, the three‑dimensional planning process is required to optimise the differential between target dose and normal tissue dose; (iii) the planning target volume is rendered as a three‑dimensional structure on planning outputs (three‑dimensional plan review, three‑planar sections review or dose‑volume histogram); (iv) organs at risk are delineated, and assessment of dose to these structures is derived from full calculation and inclusion in a dose‑volume histogram Applicable once per course of treatment